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winrt: Implement QImageEncoderControl for camera

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Implement QImageEncoderControl for camera still image capture.
It provides the functions to set camera capture resolution and
get supported resolutions list.

Task-number: QTBUG-46456
Change-Id: Ideb1aa02d420be3a30d588bebf31714fa4fa6415
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
This commit is contained in:
Peng Wu
2015-06-12 13:02:38 +03:00
committed by PengWu
parent 3cb698c0fc
commit dc9e10d4b7
7 changed files with 262 additions and 17 deletions
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44
src/plugins/winrt/qwinrtcameracontrol.cpp
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@@ -38,6 +38,7 @@
#include "qwinrtcameravideorenderercontrol.h"
#include "qwinrtvideodeviceselectorcontrol.h"
#include "qwinrtcameraimagecapturecontrol.h"
#include "qwinrtimageencodercontrol.h"
#include <QtCore/qfunctions_winrt.h>
#include <QtCore/QCoreApplication>
@@ -75,6 +76,10 @@ QT_USE_NAMESPACE
RETURN_VOID_IF_FAILED(msg); \
}
inline uint qHash (const QSize &key) {
return key.width() * key.height();
}
class CriticalSectionLocker
{
public:
@@ -453,6 +458,7 @@ public:
QPointer<QWinRTCameraVideoRendererControl> videoRenderer;
QPointer<QWinRTVideoDeviceSelectorControl> videoDeviceSelector;
QPointer<QWinRTCameraImageCaptureControl> imageCaptureControl;
QPointer<QWinRTImageEncoderControl> imageEncoderControl;
};
QWinRTCameraControl::QWinRTCameraControl(QObject *parent)
@@ -470,6 +476,7 @@ QWinRTCameraControl::QWinRTCameraControl(QObject *parent)
this, &QWinRTCameraControl::onBufferRequested);
d->videoDeviceSelector = new QWinRTVideoDeviceSelectorControl(this);
d->imageCaptureControl = new QWinRTCameraImageCaptureControl(this);
d->imageEncoderControl = new QWinRTImageEncoderControl(this);
}
QWinRTCameraControl::~QWinRTCameraControl()
@@ -654,18 +661,18 @@ QCameraImageCaptureControl *QWinRTCameraControl::imageCaptureControl() const
return d->imageCaptureControl;
}
QImageEncoderControl *QWinRTCameraControl::imageEncoderControl() const
{
Q_D(const QWinRTCameraControl);
return d->imageEncoderControl;
}
IMediaCapture *QWinRTCameraControl::handle() const
{
Q_D(const QWinRTCameraControl);
return d->capture.Get();
}
QSize QWinRTCameraControl::imageSize() const
{
Q_D(const QWinRTCameraControl);
return d->size;
}
void QWinRTCameraControl::onBufferRequested()
{
Q_D(QWinRTCameraControl);
@@ -763,10 +770,11 @@ HRESULT QWinRTCameraControl::initialize()
Q_ASSERT_SUCCEEDED(hr);
d->size = QSize();
ComPtr<IVideoEncodingProperties> videoEncodingProperties;
quint32 encodingPropertiesListSize;
hr = encodingPropertiesList->get_Size(&encodingPropertiesListSize);
Q_ASSERT_SUCCEEDED(hr);
QHash<QSize, ComPtr<IVideoEncodingProperties>> videoEncodingPropertiesList;
int pixelCount = 0;
for (quint32 i = 0; i < encodingPropertiesListSize; ++i) {
ComPtr<IMediaEncodingProperties> properties;
hr = encodingPropertiesList->GetAt(i, &properties);
@@ -779,21 +787,33 @@ HRESULT QWinRTCameraControl::initialize()
Q_ASSERT_SUCCEEDED(hr);
hr = videoProperties->get_Height(&height);
Q_ASSERT_SUCCEEDED(hr);
// Choose the highest-quality format
if (int(width * height) > d->size.width() * d->size.height()) {
d->size = QSize(width, height);
videoEncodingProperties = videoProperties;
if (d->captureMode != QCamera::CaptureStillImage && int(width * height) > pixelCount) {
d->size = QSize(width, height);// Choose the Highest-quality format
pixelCount = d->size.width() * d->size.height();
}
videoEncodingPropertiesList.insert(QSize(width, height), videoProperties);
}
if (!videoEncodingProperties || d->size.isEmpty()) {
if (videoEncodingPropertiesList.isEmpty()) {
hr = MF_E_INVALID_FORMAT;
RETURN_HR_IF_FAILED("Failed to find a suitable video format");
}
if (d->captureMode == QCamera::CaptureStillImage) {
d->imageEncoderControl->setSupportedResolutionsList(videoEncodingPropertiesList.keys());
d->size = d->imageEncoderControl->imageSettings().resolution();
}
hr = RoActivateInstance(HString::MakeReference(RuntimeClass_Windows_Media_MediaProperties_MediaEncodingProfile).Get(),
&d->encodingProfile);
Q_ASSERT_SUCCEEDED(hr);
const ComPtr<IVideoEncodingProperties> videoEncodingProperties = videoEncodingPropertiesList[d->size];
if (!videoEncodingProperties) {
hr = MF_E_INVALID_FORMAT;
RETURN_HR_IF_FAILED("Failed to find a suitable video format properties");
}
hr = d->encodingProfile->put_Video(videoEncodingProperties.Get());
Q_ASSERT_SUCCEEDED(hr);
if (d->videoRenderer)